This study investigates the technical efficiency and its influential factors of a liner shipping company in Taiwan by using the translog stochastic frontier production function. According to an analysis on the company's operations data of 21 routes in regions of Europe, America, Asia, and Atlantic from Years 2003 to 2006, we have the following conclusions: (1) for trend analysis, Year 2006 has the best efficiency while Year 2004 is the worst; (2) the efficiency measure of outbound operations is greater than that of inbound operations; (3) by regional analysis, the efficiency score of Asian routes is the highest, followed by European routes and Atlantic routes, while that of American routes is the lowest; (4) for seasonal factor, we found that the efficiency score of the first quarter is the best, while the fourth quarter lies in the other extreme; and (5) the company's routes are at the stage of increasing return to scale, thus the expansion of operation scale would decrease average costs, furthermore, we also find that crew members have the greatest production elastic, which implies the importance of human resource management in the whole operation. Unlike previous investigations were generally conducted on an industrial basis, the present study directly analyzes a company's operations data, attempting to provide more relevant information for the management in making decision and for the government in formulating policies of ocean cargo transportation.